Apparatus and methods are provided for RRM measurement in the NR network. In one novel aspect, the RRM measurement is configured with one measurement gap for SS block and CSI-RS. In one embodiment, an extended MGL (eMGL) is configured such that the SS block and CSI-RS is measurement within one measurement gap. In another embodiment, the shorter MGL (sMGL) that is shorter than the standard MGL is configured. In another novel aspect, the CSI-RS is allocated adjacent to the SS blocks such that one measurement gap is configured for both the SS block and CSI-RS measurement. In another novel aspect, the CSI-RS measurement is conditionally configured. In yet another novel aspect, the UE decodes the time index of the SS block conditionally.
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2. The method of claim 1, wherein a single common measurement duration and a single common measurement timing offset are configured for different CSI-RS resources.
This invention relates to wireless communication systems, specifically improving the measurement of channel state information reference signals (CSI-RS) in multi-user scenarios. The problem addressed is the inefficiency and complexity of configuring separate measurement durations and timing offsets for different CSI-RS resources, which can lead to increased signaling overhead and reduced system performance. The solution involves configuring a single common measurement duration and a single common timing offset for multiple CSI-RS resources. This approach simplifies the measurement process by eliminating the need for individual configurations, reducing signaling overhead and processing complexity. The common settings ensure synchronized measurements across different resources, improving coordination between the base station and user equipment (UE). This method is particularly useful in scenarios where multiple UEs need to measure CSI-RS resources simultaneously, such as in multi-user multiple-input multiple-output (MU-MIMO) systems. The common configuration allows for efficient resource allocation and better utilization of the communication channel. By standardizing the measurement parameters, the system achieves more consistent and reliable channel state information, enhancing overall communication efficiency and reliability.
3. The method of claim 2, wherein each CSI-RS is configured with one or more parameters comprising: a cell identification (ID), a scrambling ID, a periodicity and timing offset of the CSI-RS, a measurement bandwidth of the CSI-RS, a frequency location, a numerology of the CSI-RS, and a quasi-co-location (QCL) of the CSI-RS.
4. The method of claim 1, wherein each CSI-RS configuration reuses a beam management configuration of each corresponding CSI-RS if its corresponding cell ID indicates a serving cell.
5. The method of claim 1, wherein the RRM configuration and the measurement gap configuration are configured by dedicated signaling.
A method for configuring radio resource management (RRM) and measurement gap configurations in a wireless communication system involves using dedicated signaling to transmit these configurations from a network node to a user equipment (UE). The RRM configuration includes parameters for managing radio resources, such as power control, handover decisions, and load balancing. The measurement gap configuration defines time intervals during which the UE suspends its regular communication to perform measurements on neighboring cells, supporting mobility and interference management. By using dedicated signaling, the network can tailor these configurations to specific UEs, optimizing performance based on their individual conditions and requirements. This approach enhances flexibility and efficiency in resource allocation and measurement procedures, improving overall system reliability and user experience. The method ensures that the UE receives precise and customized instructions for RRM and measurement gap operations, reducing the need for generic or broadcasted configurations that may not be optimal for all devices. This technique is particularly useful in advanced wireless networks where dynamic adaptation to varying channel conditions and traffic demands is critical.
6. The method of claim 1, wherein the CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol after the SS block.
This invention relates to wireless communication systems, specifically to the allocation of channel state information reference signals (CSI-RS) in a physical downlink shared channel (PDSCH) symbol following a synchronization signal (SS) block. The problem addressed is optimizing the placement of CSI-RS to improve channel estimation and data transmission efficiency in wireless networks, particularly in scenarios where rapid synchronization and channel state feedback are required. The invention describes a method for allocating CSI-RS in a PDSCH symbol that immediately follows an SS block. The SS block, which includes primary and secondary synchronization signals along with physical broadcast channel (PBCH) information, is used by user equipment (UE) to synchronize with the network and acquire essential system parameters. By placing the CSI-RS in the subsequent PDSCH symbol, the system ensures that the UE can quickly obtain accurate channel state information for downlink transmissions, reducing latency and improving data throughput. The method leverages the timing relationship between the SS block and the PDSCH symbol to enhance channel estimation accuracy. The CSI-RS, which consists of reference signals transmitted in specific resource elements, allows the UE to measure the downlink channel conditions and provide feedback to the base station. This feedback enables the base station to adapt its transmission parameters, such as modulation and coding schemes, to optimize data transmission reliability and efficiency. The invention is particularly useful in high-mobility scenarios or environments with rapidly changing channel conditions, where timely channel state information is critical for maintaining communication quality.
7. The method of claim 1, wherein the SS block is an SS burst block across multiple analog beams, and wherein CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol after the SS block.
8. The method of claim 7, wherein the same analog beamforming applies to both the SS burst block and the CSI-RS burst block.
This invention relates to wireless communication systems, specifically to techniques for beamforming in cellular networks. The problem addressed is the inefficiency in beamforming processes where separate analog beamforming configurations are used for different types of reference signals, leading to increased overhead and complexity. The solution involves applying a consistent analog beamforming configuration to both synchronization signal (SS) burst blocks and channel state information reference signal (CSI-RS) burst blocks. This approach ensures that the same beamforming weights are used for both signal types, reducing the need for repeated beamforming adjustments and improving synchronization and channel estimation accuracy. The method simplifies the beamforming process by eliminating the need to reconfigure analog beamforming between different signal transmissions, thereby enhancing system efficiency and reliability. The invention is particularly useful in millimeter-wave (mmWave) and other high-frequency wireless systems where precise beam alignment is critical. By maintaining a unified beamforming configuration, the system achieves faster synchronization and more accurate channel state information, leading to improved overall performance.
10. The UE of claim 9, wherein a single common measurement duration and a single common measurement timing offset are configured for different CSI-RS resources.
A system and method for configuring measurement parameters in wireless communication networks, particularly for user equipment (UE) performing channel state information reference signal (CSI-RS) measurements. The invention addresses inefficiencies in prior art where different CSI-RS resources may require separate measurement durations and timing offsets, leading to increased signaling overhead and processing complexity. The solution involves configuring a single common measurement duration and a single common measurement timing offset for multiple CSI-RS resources. This approach simplifies measurement procedures by allowing the UE to use the same timing and duration parameters across different CSI-RS resources, reducing signaling overhead and improving measurement efficiency. The UE receives configuration information specifying the common parameters and applies them to all relevant CSI-RS resources, ensuring synchronized and consistent measurements. This method is particularly useful in scenarios where multiple CSI-RS resources are used for beam management, channel estimation, or other purposes, as it minimizes the need for individual configurations while maintaining measurement accuracy. The invention enhances system performance by reducing processing load on the UE and optimizing resource utilization in the network.
11. The UE of claim 10, wherein each CSI-RS is configured with one or more parameters comprising: a cell identification (ID), a scrambling ID, a periodicity and timing offset of the CSI-RS, a measurement bandwidth of the CSI-RS, a frequency location, a numerology of the CSI-RS, and a quasi-co-location (QCL) of the CSI-RS.
12. The UE of claim 9, wherein each CSI-RS configuration reuses a beam management configuration of each corresponding CSI-RS if its corresponding cell ID indicates a serving cell.
This invention relates to wireless communication systems, specifically to techniques for configuring and reusing beam management parameters in cellular networks. The problem addressed is the inefficiency in managing beam-related configurations for channel state information reference signals (CSI-RS) in scenarios where multiple cells or beams are involved, leading to redundant signaling and processing overhead. The invention describes a user equipment (UE) that optimizes beam management by reusing existing beam management configurations for CSI-RS when the corresponding cell identifier (ID) indicates a serving cell. This approach avoids the need to reconfigure beam-related parameters for each CSI-RS, reducing signaling overhead and processing complexity. The UE is configured to receive CSI-RS configurations from a network, where each configuration includes a cell ID and beam management parameters. If the cell ID corresponds to a serving cell, the UE reuses the beam management configuration associated with that CSI-RS, rather than establishing a new configuration. This reuse applies to all CSI-RS configurations that meet the serving cell condition, ensuring consistent beam management across multiple CSI-RS instances. The technique improves efficiency in beam tracking and channel estimation, particularly in multi-cell or multi-beam scenarios, by minimizing redundant configuration steps.
13. The UE of claim 9, wherein the RRM configuration and the measurement gap configuration are configured by dedicated signaling.
14. The UE of claim 9, wherein the CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol after the SS block.
15. The UE of claim 9, wherein the SS block is an SS burst block across multiple analog beams, and wherein CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol after the SS block.
This invention relates to wireless communication systems, specifically improving synchronization and channel state information (CSI) acquisition in 5G New Radio (NR) networks. The problem addressed is the need for efficient synchronization signal (SS) block transmission and CSI reference signal (CSI-RS) allocation to support beamforming and multi-user communication in high-frequency bands. The invention describes a user equipment (UE) configured to receive an SS block, which is structured as an SS burst block spanning multiple analog beams. This allows the UE to scan and synchronize with different beams transmitted by a base station. Following the SS block, CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol. This placement enables the UE to measure downlink channel conditions after synchronization, improving beam selection and data transmission efficiency. The SS burst block and subsequent CSI-RS allocation optimize beam management and reduce signaling overhead, enhancing overall system performance in millimeter-wave (mmWave) and other high-frequency deployments. The solution supports dynamic beamforming and adaptive CSI reporting, ensuring reliable communication in challenging propagation environments.
16. The UE of claim 15, wherein the same analog beamforming applies to both the SS burst block and the CSI-RS burst block.
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June 15, 2018
October 11, 2022
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